19461228918808 has 32 divisors (see below), whose sum is σ = 36985479854400. Its totient is φ = 9598790097568.

The previous prime is 19461228918707. The next prime is 19461228918823. The reversal of 19461228918808 is 80881982216491.

It is a super-2 number, since 2×19461228918808² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21799966 + ... + 22675117.

It is an arithmetic number, because the mean of its divisors is an integer number (1155796245450).

Almost surely, 2^{19461228918808} is an apocalyptic number.

It is an amenable number.

19461228918808 is a deficient number, since it is larger than the sum of its proper divisors (17524250935592).

19461228918808 is a wasteful number, since it uses less digits than its factorization.

19461228918808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44475831 (or 44475827 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 67.

The spelling of 19461228918808 in words is "nineteen trillion, four hundred sixty-one billion, two hundred twenty-eight million, nine hundred eighteen thousand, eight hundred eight".